# -*- coding: utf-8 -*-
# Part of DTCloud. See LICENSE file for full copyright and licensing details.

from collections import defaultdict
from datetime import datetime, timedelta
from unittest.mock import patch

from dtcloud.addons.mail.tests.common import MailCommon


class MailTrackingDurationMixinCase(MailCommon):

    @classmethod
    def setUpClass(cls, tested_model, model_fields=None):

        super().setUpClass()
        if model_fields:
            for field in model_fields:
                if model_fields[field] == 'create':
                    model_fields[field] = cls.env[tested_model][field].create({'name': 'test'}).id

        stage_1_values = {'name': 'Stage 1'}
        stage_2_values = {'name': 'Stage 2'}
        stage_3_values = {'name': 'Stage 3'}
        stage_4_values = {'name': 'Stage 4'}
        cls.track_duration_field = cls.env[tested_model]._track_duration_field

        stage_model = cls.env[tested_model][cls.track_duration_field]
        cls.stage_1 = stage_model.create(stage_1_values)
        cls.stage_2 = stage_model.create(stage_2_values)
        cls.stage_3 = stage_model.create(stage_3_values)
        cls.stage_4 = stage_model.create(stage_4_values)

        record_values = {'name': 'test record', cls.track_duration_field: cls.stage_1.id}
        if model_fields:
            record_values.update(model_fields)

        cls.mock_start_time = datetime(2023, 2, 15, 12, 0, 0)

        with patch.object(cls.env.cr, 'now', return_value=cls.mock_start_time):
            cls.rec_1, cls.rec_2, cls.rec_3, cls.rec_4 = cls.env[tested_model].create(
                [record_values for i in range(4)])
        cls.flush_tracking(cls)

    def _update_duration_tracking(self, record_to_tracking_dic, minutes, new_stage=False):
        """
        Updates the mock duration_tracking field for multiple records based on the provided minutes.
        If new_stage is defined, the stage of the records is updated as well.

        Args:
            record_to_tracking_dic (list): A list of tuples mapping records to their respective tracking dictionaries.
            minutes (int): The number of minutes to be added to the duration tracking, which will be converted to seconds.
            new_stage (int, optional): Indicated the new stage to be set for the records. Defaults to False.
        """
        for record, tracking_dic in record_to_tracking_dic:
            tracking_dic[str(record[self.track_duration_field].id)] += minutes * 60
            if new_stage:
                tracking_dic[str(new_stage.id)] += 0
                record[self.track_duration_field] = new_stage
                self.flush_tracking()

    def assertTrackingDuration(self, records, record_to_tracking_dic):
        """
        Asserts whether for multiple records their duration_tracking is equal to a dictionary

        Args:
            records (recordset): all the records that need to be asserted
            record_to_tracking_dic (list): A list of tuples mapping records to their respective tracking dictionaries.
        """
        records._compute_duration_tracking()
        for record, tracking_dic in record_to_tracking_dic:
            self.assertDictEqual(dict(tracking_dic), record.duration_tracking)

    def _test_record_duration_tracking(self):
        """
        Moves a record's many2one field through several values and asserts the duration spent in that value each time
        """

        with patch.object(self.env.cr, 'now', return_value=self.mock_start_time) as now:

            track_duration_tracking = defaultdict(lambda: 0)
            record = self.rec_1

            minutes = 5
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking([(record, track_duration_tracking)], minutes, self.stage_2)
            self.assertTrackingDuration(record, [(record, track_duration_tracking)])

            minutes = 100
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking([(record, track_duration_tracking)], minutes)
            self.assertTrackingDuration(record, [(record, track_duration_tracking)])

            minutes = 5000
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking([(record, track_duration_tracking)], minutes, self.stage_3)
            self.assertTrackingDuration(record, [(record, track_duration_tracking)])

            minutes = 5000
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking([(record, track_duration_tracking)], minutes, self.stage_4)
            self.assertTrackingDuration(record, [(record, track_duration_tracking)])

            minutes = 20
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking([(record, track_duration_tracking)], minutes, self.stage_2)
            self.assertTrackingDuration(record, [(record, track_duration_tracking)])

            minutes = 55
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking([(record, track_duration_tracking)], minutes, self.stage_4)
            self.assertTrackingDuration(record, [(record, track_duration_tracking)])

            minutes = 200
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking([(record, track_duration_tracking)], minutes)
            self.assertTrackingDuration(record, [(record, track_duration_tracking)])

            minutes = 300
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking([(record, track_duration_tracking)], minutes, self.stage_3)
            self.assertTrackingDuration(record, [(record, track_duration_tracking)])

    def _test_record_duration_tracking_batch(self):
        """
        Moves for a batch of records many2one field through several values and asserts the duration
        spent in that value each time.
        """

        with patch.object(self.env.cr, 'now', return_value=self.mock_start_time) as now:

            track_duration_tracking1 = defaultdict(lambda: 0)
            track_duration_tracking2 = defaultdict(lambda: 0)
            track_duration_tracking3 = defaultdict(lambda: 0)
            batch = self.rec_1 | self.rec_2 | self.rec_3
            record_to_tracking_dic = [
                (self.rec_1, track_duration_tracking1),
                (self.rec_2, track_duration_tracking2),
                (self.rec_3, track_duration_tracking3)
            ]

            minutes = 5
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking(record_to_tracking_dic, minutes, self.stage_2)
            self.assertTrackingDuration(batch, record_to_tracking_dic)

            minutes = 100
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking(record_to_tracking_dic, minutes)
            self.assertTrackingDuration(batch, record_to_tracking_dic)

            minutes = 5000
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking(record_to_tracking_dic, minutes, self.stage_3)
            self.assertTrackingDuration(batch, record_to_tracking_dic)

            minutes = 5000
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking(record_to_tracking_dic, minutes, self.stage_4)
            self.assertTrackingDuration(batch, record_to_tracking_dic)

            minutes = 20
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking(record_to_tracking_dic, minutes, self.stage_2)
            self.assertTrackingDuration(batch, record_to_tracking_dic)

            minutes = 55
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking(record_to_tracking_dic, minutes, self.stage_4)
            self.assertTrackingDuration(batch, record_to_tracking_dic)

            minutes = 200
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking(record_to_tracking_dic, minutes)
            self.assertTrackingDuration(batch, record_to_tracking_dic)

            minutes = 300
            now.return_value += timedelta(minutes=minutes)
            self._update_duration_tracking(record_to_tracking_dic, minutes, self.stage_3)
            self.assertTrackingDuration(batch, record_to_tracking_dic)

    def _test_queries_batch_duration_tracking(self):
        """
        The MailTrackingDuration mixin is only supposed to add 3 queries
        """

        batch = self.rec_1 | self.rec_2 | self.rec_3 | self.rec_4
        batch[self.track_duration_field] = self.stage_2.id
        self.flush_tracking()
        batch[self.track_duration_field] = self.stage_4.id
        self.flush_tracking()
        batch[self.track_duration_field] = self.stage_1.id
        self.flush_tracking()
        batch[self.track_duration_field] = self.stage_3.id
        self.flush_tracking()
        batch[self.track_duration_field] = self.stage_2.id

        with self.assertQueryCount(2):
            batch._compute_duration_tracking()
